x=int(input())
if x<600:
    a=8
elif x<800:
    a=7
elif x<1000:
    a=6
elif x<1200:
    a=5
elif x<1400:
    a=4
elif x<1600:
    a=3
elif x<1800:
    a=2
else:
    a=1
print(a) x=int(input()) x int(input()) int input() input if x<600:
    a=8
elif x<800:
    a=7
elif x<1000:
    a=6
elif x<1200:
    a=5
elif x<1400:
    a=4
elif x<1600:
    a=3
elif x<1800:
    a=2
else:
    a=1 x<600 x 600 a=8 a 8 elif x<800:
    a=7 x<800 x 800 a=7 a 7 elif x<1000:
    a=6 x<1000 x 1000 a=6 a 6 elif x<1200:
    a=5 x<1200 x 1200 a=5 a 5 elif x<1400:
    a=4 x<1400 x 1400 a=4 a 4 elif x<1600:
    a=3 x<1600 x 1600 a=3 a 3 elif x<1800:
    a=2 x<1800 x 1800 a=2 a 2 a=1 a 1 print(a) print a x=int(input()) int(input()) x a=8 8 a a=7 7 a a=3 3 a a=5 5 a a=2 2 a a=4 4 a a=6 6 a a=1 1 a
x=int(input())
if x<600:
    a=8
elif x<800:
    a=7
elif x<1000:
    a=6
elif x<1200:
    a=5
elif x<1400:
    a=4
elif x<1600:
    a=3
elif x<1800:
    a=2
else:
    a=1
print(a)